Auto truck mechanical dump hoist



April 10, 1928. 1.665.340

w. N. BIRNEY AUTO TRUCK MECHANICAL DUNll HOIST Fil ed Sept. 18. 1926 4 sheets-sheet 1 145' 138 flrenjor f p am 141 139 6 April 10, 1928. v

' W. N. BIRNEY AUTO TRUCK MECHANICAL DUMP HOIST Filed Sept. 18. 1926 v v VM2 E H V WMN 4; Inventor April 10, 1928.

W. N. BIRNEY AUTO TRUCK MECHANICAL DUMP HOIST Filed Sept. 18. 1926 4 Sheets-Sheet 3 5f z r 5f .3 .94

In van for April 10, 1928. v

' W. N. BIRNEY AUTO TRUCK MECHANICAL DUMP HOIST so at the top andl-atched at the I I "by suitable means, -allowing when .unlatched.

Patented Apr. 10,

umreo, sin s mi-Em oFF ca.

I WILLIAM N. IBIRNIEY, or WrLLoUGnBY. oHio, ASSIGNOROF ONE-HALF T MICHAEL H. i

I 'IMCKENNA, or CLEVELAND, on o.

AUTo T UQK MECHAN CALLUMP Horse Application filed .SeptemberllS, 1926., I Serial 11%. 136,339.

This invention relates to new and useful 1 improvements in vehicle body hoists and more dump hoists.

An object of the invention is to providea I, inanua strong improved compact inclosed dumping means forauto: dump trucks, I protecting the gear and rack teeth on the rack and pinion type of dump body hoists.

Another object is to provide improved bracket nieans' for'mounting the dumping means on various sized chassis and chassis, channel bars, avo1'd1ng the necessity of pro-; YlCllll-Q' large stocks of varled sized brackets for difierent types'and'sizes of trucks.

A further object is to provide an improved compact power'take off means for the dump ing means, to be applied to various truck transmission.

"tion will be scribed. I

:I- n thedrawings: I v r Fig. 1 is a side viewof an auto dump hereinafter pointed out and de- 2 truckpa'r-tly broken away showing the body dumping-means.

Fi 2 is a detail sectional: transmission power take off.

1 Fig. 3 is an enlarged detail view of a rack.

' Fig. 4 is asection on line 44 of Fig. 3.

5-is an enlar ed sectionalview on of. the. engine transmission. Stub shaft 25 is connected by universal coupling 27 ,,inter-. mediate shaft 24, universal coupling .26 and.

Fig. 1-0 is a section on line 10-10 of 5. l

Fig. 11 is a horizontal sectional View 2 through the reduction gear .housmg.

4o Referring specifically to the drawings, 5

indicates generally an-ordinaryauto dump truck having chassis channel bars 6 on which I I I I having a bottom fwitl1-a central longitude. nal disposed rib 36 on the bottom side thereare secured stringers 'i" adapt-ed tonorn ally support the dump body 8 pivoted as at 9 on the rear end of the chassischannels 6 allowing the body tobe raised or lowered for dumping purposes by improved elevatingxorw I I bearings 41 and 42 respectively ribbed as at the load to discharge by sliding along the lztiltedbody floorpast'the gate, The-body 8 particularly :auto truck: mechanical.

' =Iwhen'lowered., v U

The present nvention I provides improved covering and Other objects and vfeatures of the inven- I shafts 23, 24, 25- and I I and '27tofthe transniisison power take off View of the is suitablyreinforced fby tran'sverse I-beams 11" and longitudinal side channels 12 adapted to .set stringers 7 and supportthe 'body oivswinging the body to'a loaddumping angle of approximately 70 and automatie Cally stopping, ing' position by manually starting and auto .matically stopping as'shownjin Fig. -1, the means comprising generally .a-p'airof, improved rack bars 15' each having an eye; 16 pivotallyconnected on a fixed shaft 17 extending teeth 19 meshing with and enclosing a di'iv lly started means for pivotally'tilting e0v and'lowering'to load receiv- I I between the inner sides of body Y .channels12. 'Each rack 15 hasinternal rack ing .pinion.20 and 21 respectively, of a, re-;-

duct-ion gear enclosed inbo'x 22 and having a clutch in box 22 univ rsal coupling 26 connected driving indicated at 28 boltedito, the truck engine transmission housing 29, l

The improved,compactpowerttake off28 comprises a'c'asing 14 bolted to transmission 1 l1ousing;2 9 over an opening 30 provided 1' therein,- with the stub -shaft 25,journalled in casing 14, the'stub shaft 25 carryin'ga gear 33 disposedwithin the casing and extending through opening 30,1neshing withl'a gear 31 stub shaft 23 -to the clutch'in'd'cated generally at 22'. Y I I I I Y The gear, and clutch boxes 22 and 22 form a compact gear boxing indicated generally at 34 supported by improved brackets indicated at35 and 36 suitably secured to chassis channels 6; I I i I The gear boxing 34 comprises a casting of together with tapped bracket bolt holes 37' and a drain plug-38. The-boxing side walls 39 and 40 are provided with journal 43 and shaft bosses 44 and 45. 'The rear wall 46 has a lubricant filling-neck 47 norwall 49 of the boxing 34 is formed inwardly holtedon walls 39, 40,46 and 49 enclosing the reduction gears to be hereinafter dei1 ledge 49 and is shaped ,whiclr-is enlarged and tapped V screw threaded plug scribed. The front wall49 has an upper inwardly at thetop.

The clutch box 22is formed on housing front wall 49, having sidewalls 51 and 52 provided. with 'bearings 53 and 55.I'eSpc.C-v hlVBlV..tl'16 bOEt1'111 -53 BXtBDClID outwardlv as at 54 andreinforced'bya rib- 5467f The 7 bearing portion 54 is prov ded with boss 57 havingbore 58; the upper portion of to receive a 59 for adjusting the {compression ofa spring 60 pressing a ball indicated at 61 and v A cover closure 63 is ,en'cloeing'the clutch to scribed,

The

clutch mechanism comprises stub I shaft 23,jounrnaled in suitable ball bearings i tending forwardly through a .secured on ;te'rnall'y threaded to receive a nut75forcing (77" about shaft 23.

"m'ounted on shaft 23 64 eand' 65 mounted in 79, the groove receiving bosses 66 and 67 in walls 49 and 62 respectively,

boss 67. ,The shaft-23 has thrust shoulders 68 and 69 engaging the bearings and" akey 70 disposed between them. The

stuffing box 71 has a' shoulder 72 setting within boss 67 and a thrust extension 73 adapted to engagefagainst' the inner collar:

' 67 of bearing 65 secured on shaft 23 preventing displacement of the shaft 23. The outerextension 74 of the stuffing box is exa sleeve 76 in the gland against the packing grooved extension and 69, has an vannularly a yoke81 secured on "a rocker shaft 80' journaled in bearings V 53 and 54. Therocker shaft 80 is actuated 1 byimeansto be 45 hereinafter described.

Theggear 7 8', when moved rearwardly by yoke 81 through means to be hereinafter described is adapted to mesh-with an idler gear ,81 one shaft 84 secured in walls 49 and 62.

1 The idler gear 81 has so i the gears are retained on shaft 84; The gear gear an extension 82 con necting to a relatively smaller gear 83, and between collars 84 83 meshes with a 86 keyed on a worm drive shaft 85. jourhale-din a bearing 8cmounted in an opening reduction gear housing an d The shaft has thrustengaging bearings '87 shoulders.

88 in wall 49, the shaft 85 extending into the being journaled in a hearing 89 mounted on and 89 respectively gear 92 between'xthe and carries a worm bolt 94 screw threaded'into'a plate 96 and secured by alock nut vi ded to allow the shaft ex stuffing box 71 134 on studs 127and 128 respectively .gear '78; slidably 7 between shoulders 68 slot 138 and a slot 143 provided in theinner side 142 ofbottom thereoffslot bottoni 5141. shoulders and 91 slot side walls .139, 139, j V rack on the pinion laterally. The rack Theend of shaft 85 in the clutch "box ,is forlned with a central cone shaped socket 93 receivingthe cone shaped endof a worin adjusting thrust has a shoulder 97 setting into an opening'98 in wall 62. The relatively large plate 96 and bearing 87 is prothe worm gear to be inserted or removed. i

The plate 96 1, wheel 99 mounted on the reduced hub 100 of a pinion 111 having a bushing 112 and freely inounte'd orifixed shaft 113 pinned in bosses 44 and 45.

The pinion 111 meshes V 1nounted onadrive shaft 114 journaled inv bearings 41 and 42. The gear 115 with an extension 116 carrywith an idler {gear ing alpinion gear117 is hushed. as at 118and 119 freely turning on shaft'114. 'The pinion 117. meshes with a gear 120 carrying a-pinion gear 121, the gears 120 and 121 are hushed as at 122 and 123. freely turning on shaft 113 Pinion 121 meshes withgear 124 keyed on drive shaft 114, the reduced shaft ends 125 and 126 bearings 41 and 42 and havmg further re 'duced threaded studs 127 and 128. Back.

driving pinion gears 20cand 21 are keyed on shaft extensions 125 and 126 with the re- 130 bolting against 'duced gear hubs 129 and The gears 20 and the-extension shoulders.

"21 are also secured byspecial nuts 131 and 132screwthreaded andpi'nned as at 133 and The thereof projecting beyond special nuts 131 and 132 each comprises an 1 inner hexagonal portion 135 and "an outer cy- "lindrlcal portion 136'having a flat end 137.

each rack, the gear fnut; extending into a groove 145 formed in the outer rack'wall 144p The internal gear travel slot, hub slot and gear nut groove extend from ad acent the eye-16 to the opposite rack end. H The lower groove wall'146 provides a ledge on which the cylindrical nut-j end 136 turns maintaining the pin on gear teeth'in mesh with the, rack teeth and clear ng the pinion concave top 1470f groove145. The pinion 140, retain the teeth 19 are terminated as at 148 adjacent the pivot eye and at 149"near'the rack end The roller nut clears the V whiclris'elosed as by plate-150. The rack V r design p'rovides a strong rigid structure. The Iack'15 lSPITOVlLlQd on the top side with lower end a stop arm 152 and the plate 150 thereof has a hook shaped stop arm 151 for ur poses to be hereinafter described.

g 'The clutch rocker arm 80 carries a lever 153 with a rearwardly extending arm 154 having a trip finger 155 engageablebyrack hook 151 at the limit of movement ofthe rack one way and by a rack arm 152i at'the limit of movement theotl ier 'way. The lever 153 is connected by a link 156. to the ofa lever 154 pivoted on a bracket 155 on the floor board "adjacent the dri-verls scat. 1

- "The improved brackets for supporting the reduction gear and clutch. boxes each comprises a substantially U-shaped portion 156 which is adapt-ed to be'fitted into the chassis channel 6 and securely riveted thereto.

The bracket extends inwardly at the top as at 157 and is offset upwardly as at 158,'the

' inward ends 159 of each pair of brackets at the outer top,

extending adjacent to each other when as sembled. A top shoulder 160 is provided at the top of each offset and a top central reinforcing rib 161 extends from the shoulder 160 to the top of base 156. A bottom central reinforcing rib 162 extends from the bottom of base 156 to the inner end 159. Reinforcing ribs 163 are also provided at the base sides f is positioned upon the bracketends 159 with the rib 36 between them and the housing sides 39 and 40 abut-ting shoulders 160' and secured by bolts 162 with lock washers 163 extending through bracket holes 161 andscrew threaded into the boxin 37. A hole 164 is provided in one of the brackets for the drain. plug 38. The brackets are compact and strong and when cast are made large enough to be used when the base 156' to be snugly. fitted within'the channel bar and riveted thereto. 'For varying spacing of the chassis channels, the end metal. 166 is machined away to seat against rib 36 and shoulder metal165 is machined to snugly-fit against the sides of the housing. The bolt holes are then drilled to suit the tapped holesin the housing bottom.

In operation, referring to Fig. 1, the loading and hauling position of the dump body is shown in full lines and in tilted dumping position in dot and dash lines. With the ward turning shaft 8o andaxshaft notch pressed ball 60,. *from neutral into gear 83 which'meshes with and turns worm gear 92tturning pinion 111 idled on shaft;

80 I idledgear 120 T shaft 114 The gear housing- .ward and g tapped holes engages and mov ion teeth nearly at evenly dumped load.

truck motor runn-ing,;tlie transmission gear 3.1 drives gear 33, a'shaft 25, coupling 27, shaft 24,. coupling 26, and shaft 23 turning gear 78 freely or in neutral position. 'When dump the loaded truck, the le-- desirable to ver 154' is manually pushed forward. and through link 1156 lever .153 is pushed rear-..,

into engagement with spring mesh with gear 81 turning shaft gear 86, the worm worm wheel 99 and 113. Pinion 111' turns i'dled ing pinion 117-whic'h turns carrying pinion 121 which turns gear 124:,

and rack pinions .20 and 21 moving racks 15 rearwardly againstpivots 17 raising or tilting gear 115 carrythrowing lever 153 and gear" 7 8 into neutral position with ashaft notch '80" engaging ball 60 and disconnecting gear 78 from gear '.81 as shown in Fig. 9, automatically stopping the movement of the racks. The worm 92 and worm wheel lock for the mechanism.

Theyoke 81 moves gear 78 -bod y-8. When the body is fully tilted hook 151 engages arm 155 .99 act asan effective stop When the load has discharged the body is lowered'by manually pulling lever 1541 back turning a shaft'notch 80 with ball 60, the yoke 81 ,moving'gear 78 into mesh with and turning gear-86reversing the motion of the reduction gears and pinions 20-and21andmoving the racks 15 forwardly. When the body is lowered to rest on the' chassis stringers 7, rack ar1n152' es lever 153 to neutral posltion, disengaging gear 78 from gear 86 and stopping the mot on of the'reduction gears.

As shown in Fig. 1 when the body in. .norm'al horizontal position the rack pivot shafts are closely abovejthe rack pinion and through link 156 and lever 153 into". engagement I foo I the rack ends are up close to the'underside of the body providing ample road clearance while traveling. the racks are above the supporting brackets allowing free travel of the truck over rough ground. Thecurvature of the racks is graduated from end fed over thepinions, the body of the racks pass over the supporting brackets without interference, requiring a. minimum of space for the movement.

The curvature of the to end and as the racks are When thebody is raised," I

racks, while maintaining thepath of travel above the brackets, engagement of the v of the pinions keeping the thrust of the pinright angles to the body bottom'during the curvature also allows the body to betilted to a relatively sharp angle insuring an also shifts thepoint of 1 rack teeth with the teeth hoisting action. The rack within the bar,,the bar '1: guide track on the side opposite the slot, and

While I have shown and described: one embodiment of thelnvent on. obviously various changesin the proportions and details of construction may v be n1ade without departing from the spiritand scope of the ap pended claims.

I'claini: V

1. The combination with a tilting vehicle hody,of a rack and pinion gear for: tilting the same, the rack comprising a with internal raekteeth and a, slot on the inner side, "through shaft projects, the pinion being enclosed the plnion shaft having a roller traveling on i [said track; Q V .QLThe coinbinationot a tllting vehicle ing the body, a gear hollow bar 7 which slot the pinion having an internal racks and iinions for tiltfor driving the pinions, a clutch controlling the gear, and a gear and clutch box mounted together on the frame,

body and fra1nfe between theracks, the gear including a shaft; projecting through opposite sides of the box and carrying the pimons at its opposite ends,

thecluteh being provided-with a'shifting lever including a rock shatt extending boxv and' having an arm at its outer end adapted, to be engaged throughvthe side of the by projections on oneof the rack bars, and

a spring latch engaging the lever to hold'it '111 SlllftGClPOSllllOIlS. 5 e

In testimony whereof, I do aflix n iy 'sig-t nature.

W LLIA -n, Binnie-Y5 

